Mock rations (5)
I believe the answer is:
scoff
This clue is a double definition.
'mock' is the first definition.
(I've seen this before)
'rations' is the second definition.
(thesaurus)
(Other definitions for scoff that I've seen before include "taunt" , "Devour (informal)" , "Deride - guzzle" , "Speak contemptuously or drink informally" , "Eat like a pig" .)